AMD High Speed Serial Technologies

Overview

The transceiver offerings cover the gamut of today’s high speed protocols. The GTH and GTY transceivers provide the low jitter required for demanding optical interconnects and feature world class auto-adaptive equalization with PCS features required for difficult backplane operation.

• AMD Versal™ GTY (32.75Gb/s): Optimized for latency and power reduction
• AMD Versal GTM (58Gb/s): Tuned for the latest copper cable, backplane, and optical interfaces with PAM4 and NRZ support
• AMD Versal GTM (112Gb/s): Scaling for 800G Networks on Existing Infrastructure
• AMD UltraScale+™ GTR (6.0Gb/s): Easiest integration of common protocols to the Zynq Processor Subsystem
• AMD UltraScale+ GTH (16.3Gb/s): Low power & high performance for the toughest backplanes
• AMD UltraScale+ GTY (32.75Gb/s): Maximum NRZ performance for the fastest optical and backplane applications; 33G transceivers for chip-to-chip, chip-to-optics, and 28G backplanes
• AMD UltraScale™ GTH (16.3Gb/s): Low power & high performance for the toughest backplanes
• AMD UltraScale GTY (30.5Gb/s): High performance for optical and backplane applications; 30G transceivers for chip-to-chip, chip-to-optics, and 28G backplanes
• AMD UltraScale+ GTM (58Gb/s): Maximum performance using PAM4 for 58G chip-to-chip, chip-to-optics, and backplane applications
• AMD 7 Series GTP (6.6Gb/s): Power optimized transceiver for consumer and legacy serial standards
• AMD 7 Series GTX (12.5Gb/s): Lowest jitter and strongest equalization in a mid-range transceiver
• AMD 7 Series GTH (13.1Gb/s): Backplane and optical performance through world class jitter and equalization
• AMD 7 Series GTZ (28.05Gb/s): Highest rate, lowest jitter 28G transceiver in a 28nm FPGA
• AMD Spartan 6™ GTP (3.2Gb/s): Power and cost optimized transceiver for cost-sensitive applications

The table below shows the range of support within each device family:

Notes:

1. Gb/s
2. Combined transmit and receive.
3. Max transceiver count found across multiple device families.

Transceivers

Backplanes with AMD Transceivers

Leadership in auto-adaptive equalization means XAMD Transceivers provide robust performance across the most challenging backplane and direct attach copper cabled applications. AMD has built a reputation for high quality equalization, from the first 10GBase-KR compliant 7-series GTH to the upcoming 112G PAM4 GTM in Versal™ Premium series, which implements an advanced ADC/DSP based equalizer.  Whether it’s a 10G backplane or 100G copper cabling, AMD has a transceiver to support it.

Optical Interconnects with AMD Transceivers

The optical landscape is quickly transitioning beyond 10Gb/s interfaces to 100Gb/s, 400Gb/s and beyond. AMD transceivers are positioned to support the wide range of optical rates and form factors. The Versal ACAPs feature a pair of transceivers to support the variety of optical interconnects in the ecosystem today. GTY/GTYP supports SFP+ and QSFP+ up to 16.3Gb/s and QSFP28 or OSFP up to 32.75Gb/s. The GTM transceiver supports these lower rates as well as QSFP56-DD up to 58Gb/s and future 100Gb/s per-lane interfaces. The equalization’s flexibility and auto-adaptation allows the same transceiver to support both long reach backplanes as well as the short chip-to-optics interconnects with little tuning and huge margins.

UltraScale+ MPSoC High Speed IO

The Zynq™ UltraScale+™ MPSoC comes equipped with the all new GTR Transceiver. By equipping the ARMv8 processors with a transceiver and peripherals to support the most common serial interconnects, AMD has simplified the design process and reduced the overhead associated with interfacing to those interconnects.

58G PAM4 Technology

Industry Leading Transceiver Technology

To help drive the next wave of Ethernet deployment, AMD is integrating 58Gb/s transceivers into its 16nm FinFET+ Virtex™ UltraScale+™ FPGA family. The new transceiver architecture:

• Breaks through the physical limitations of data transmission at 50G+ line rates
• Features next generation equalization technologies to minimize channel loss
• Supports chip-to-chip, module, direct-attach cable, and backplane communication

PAM4 Modulation as the Way Forward

PAM4 (or 4-level Pulse Amplitude Modulation) has been recognized as the most scalable multi-level signaling protocol for next-generation line rates, and AMD is helping drive 58G PAM4 standardization efforts within both the Optical Internetworking Forum (OIF) and the Institute of Electrical and Electronics Engineers (IEEE).

Paving the Way Forward for Next Generation Ethernet

Cloud Computing, Industrial IoT, and Software-Defined Networks applications, to name a few, continue to accelerate and drive the need for unlimited bandwidth. The latest transceiver architecture will enable vendors to

• Double bandwidth on existing infrastructure
• Scale 50G, 100G, 400G ports, as well as terabit interfaces
• Evaluate the technology to develop their own next generation solutions

Next generation, standardized line rates are critical to meeting these ongoing bandwidth requirements.

JESD204B Reference Designs

AMD working with our Analog partners provides a rich set of JESD204B reference designs and high-speed analog FMC cards to jump start development.